Messages in this thread |  | | Date | Fri, 14 Feb 2014 11:39:30 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH] vt: Fix secure clear screen |
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Hi!
> \E[3J console code (secure clear screen) needs to update_screen(vc) > in order to write-through blanks into off-screen video memory.
I guess it is also suitable for stable, right?
Thanks, Pavel
> This has been removed accidentally in 3.6 by: > > commit 81732c3b2fede049a692e58a7ceabb6d18ffb18c > Author: Jean-François Moine <moinejf@free.fr> > Date: Thu Sep 6 19:24:13 2012 +0200 > > tty vt: Fix line garbage in virtual console on command line edition > > Signed-off-by: Petr Písař <petr.pisar@atlas.cz> > --- > drivers/tty/vt/vt.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c > index 61b1137..23b5d32 100644 > --- a/drivers/tty/vt/vt.c > +++ b/drivers/tty/vt/vt.c > @@ -1164,6 +1164,8 @@ static void csi_J(struct vc_data *vc, int vpar) > scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char, > vc->vc_screenbuf_size >> 1); > set_origin(vc); > + if (CON_IS_VISIBLE(vc)) > + update_screen(vc); > /* fall through */ > case 2: /* erase whole display */ > count = vc->vc_cols * vc->vc_rows;
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